Damper



. 1,628,140, J. y. GIESLER DAN-[PER REGULATOR FiledAuz. v. 1925 2 Sheets-Sheet 1 May- 10, 1 7- 1,628,140 J. v. GIESLER DAMPER REGULATOR Filed Ana. '2. 1925 2 Sheets-Sheet 2 Patented May 10, 1927.

ruins.

JEAN V. GIESLER, OF KNOXVILLE, TENNESSEE, ASSIGNOR TO THE FULTON COBIPANY, OF KNOXVILLE, TENNESSEE, A CURPORATION OF IJIAINE.

DAMPER REGULATOR.

Application filed August 7, 19525.

Another object is to provide a device of this type wherein the filling opening for introducing the thermosensitive liquid into the apparatus is positioned in one end of the guide rod, the plunger being used as a cap for said opening.

Another object is to provide a regulator wherein the thermosensitive bulb extends through the frame into direct engagement with the bellows.

Another object is to provide a device of this type with novel means for working the bellows.

The above and other objects will be fully set forth hereinafter.

One form which the inventive idea may assume is shown in the accompanying drawings, which drawings, however, are for the purpose of illustration only and are not to be taken as defining the limits of the in- 35 vention, reference being had to the appended claims for this purpose.

in the drawings, wherein like reference characters refer to like parts throughout the several views,

Fig. 1 is a side elevation of the apparatus constituting the subject matter of the present invention; 1

Fig. 2 is a view, partly in section, taken on the line 22 of Fig. 1; and

Fig. 3 is an enlarged sectional view taken on the line of Fig. 2.

In the form shown, the apparatus comprises a frame or base 1 which is provided with an inner tubular portion 1 (Fig. 3), 50 that is preferably exteriorly screw threaded whereby the frame may be threaded into the wall of a receptacle, an outer tubular portion 1", and an intermediate portion constituted by a flange 1 which is preferably Serial No. 48,895.

polygonal in outline. An opening 1 extends longitudinally through the frame 1, and intermediate the ends of this opening the inner wall of opening 1 of the frame is provided with an annular groove 1 Extending through the opening 1 is a tubular bulb 2 of any suitable constructionprovided on its outer end with a flanged portion 2, for engagement with the portion 1 of the frame 1, and intermediate its ends said bulb is beaded into the annular groove 1 of the frame, as shown at 2". In order to insure that the bulb 2 will be securely held in place in the frame, the former may be secured to the lower end of the frame, as by means of soldering or brazing, as at 3.

In engagement with the inner end of the bulb 2 and extending longitudinally and centrally therethrough, is a guide tube 4 which is provided with openings 1- at the inner end thereof for free communication between the tube and the bulb 2. Surrounding the guide tube l, at a point ad jacent the flanged portion 2 of the bulb, is an annular supporting member 5 which rests on the upper surface of said flanged portion and is secured to the guide tube 4, as by means of solder 6.

An expansible and collapsible, corrugated vessel or bellows 7, ofany suitable construction and material, is positioned immediately adjacent the frame 1 with the lower fold of the same extending around the annular supporting member 5, .and the flanged portion 2 of the bulb 2, said fold being secured to these elements in any suitable manner, as by soldering. The member 5 thereby constitutes a stationary end wall for said bellows. The upper end of the guide tube l extends through the bellows 7 and is provided with openings 4* for establishing free communication between the tube and bellows.

Secured in any suitable manner to the movable end of the bellows 7, and resting in engagement with the upper end of the guide tube 4.- when collapsed, is a rigid head 8 provided with an upwardly extending boss 8 which is preferably exterior-1y threaded and is provided with a suitable longitudinal opening 8* therethrough. The portion of the head 8 immediately adjacent the lower end of this opening may be screw-threaded as at 8, and extending within the guide will tube 4-, is a guide rod 9 provided at its outer end with a reduced threaded portion 9 hav" ing engagement with the threaded portion 8 of the head 8.

Guide rod 9 is provided at its upper end with a longitudinal opening 9" in register with the opening 8" of the head 8, and in communication with this longitudinal opening 9 is a radial opening 9 for estubi.ishingfree communication with the interior of the guide tube 4 and bellows 'Z for a purpose to be described hereinafter. A conically pointed or knife-edge plunger 10, which projects through a central opening 11 in a cap 11, is threaded onto the upper end o .t' the head 8 and constitutes a closure for the openings in the head 8 and rod 9. The m1 11, provided with lugs 12, is secured to the frame 1 in a manner to be described. herein after. Registering openings are prm'ided in the lugs 12 and through these opening: extends a rod 13 (Fig. 2) con doting a pivot pin for a rocker 14, which latter is provided with a suitable recessrul bearing portion 14 for engagement with the pointed or knife-edge end of plunger 1o. yohe lii extends upwardly from the rocker ll and receives a lever 16. Preferably, a threaded locking member 17 extends throiu h the yolze 15 into engagement with the le e lb to retain the latter in adjusted position relative to said yoke. Adjustable weights l8 oi any suitable form are mounted on the lever and if desired the lover may be provided with an opening 1(3" whereby connecting n'ieuus for the damper, or other member to be con trolled, may be connected to the lever.

Novel means are provided for housing the bellows to protect the some, said means 2 constituting a support for the cap 11. is shown, the base 1 is provided in the outer surface of the flanged portion 1 thereoit with an annular groove P and tubular member 19, constituting the housing, is positioned with its lower end extending into said groove. Preferably, the housing 19 is constituted by seamless or brazed tubing, or a sheet of metal of the proper width is formed between rollers into tubular shape and employed -for this purpose Retaining members, such as screws 20, extend throir zh openings in cap 11, through the housing l9 and into threaded engagement with the frame 1, whereby the cap 11 may be tightly held against the upper edge of the tubular housing 19, and the latter is securely maintained in position.

The volatile liquid employed in the apparatus is introduced therein before the plunger 10 is threaded onto the boss of the head 8. For this purpose a fixture (which forms no part of the present invention and is well known in the art) having a threeway valve may be threaded onto the boss 8 so that a suction may be applied through renal lo passages El and ll, 9" to create a 'raemuu in the interim. ol the brlluws l' and. bulb ii 'lhcreailtor the three-way valve is turned to register with a container having the volatile liquid to be introduced, whereupon the liquid, will llow into the instrument. llpon removal ol the liitture the openings ll" and U" are suitably closed as by means ol' a rorh ill and solder ill/5:3. llhe plunger it) is lhcn included on the bow and the tubular member or housii"; -3 is positioned on the base, the cap ll in, 1 with the housing and the serene Illl up lo retain the put is in operatiye position. 'l hc regulator lheu suitably smulletl us by means all the threads l on the body l to the wall ol :1 ecull ajiuer wherein the bulb L5 is subiwled lo a heating l'luid. .he beat ol' this lluid, which rineulates around or is in heat inter-chain" in; rela ion with the bulb ll, prudurru vapor pressure on the liquid (fmll'tlllltil in said bulb and this pressure is linnz-mitlod lo the uuuable end wall a throiurh the liquid in said bulb and lJblltHH-l, the liquid thriving through the (u ening :l lo tube land lbrough the og'uurings l" to the interior ol' the bellows i'. ations oil this preauu'e due to variations ol' temperature ol' the healing fluid result in nuweuienls oil? the head l5 which uuwnnienlu l a ri are liransunill'ed by the plunger ill to [he l()Cl-I.U1' lil. lrlorenient ol the roeluu about the pivot pin lll results in movement ol the lever 11b and euimeuuoully el" the damper, or other member to be regulated, which is opcraliively eonnceted lo the lever. 'lhc looering oil? the temperature ol the heating lluid will dnrreuso the pressure within the bulb 2 and bellows whereby mormuout ol' the lever lb in the opposite direrliou will ljuhe place.

.lt will. thus be pmceb ed lllilll there is pro vidcd a dan'iper regulator ubieh is so con strueted as to reduce the number of sohlered joints required to a minimum and one wheroin the assemblage oi? the parts and intrruluetion ol the volatile liquid are readily carried out. 'llhe housing protects the bellows :l roiu injury and serves as a supporting 'uunibur for the lover to be actuated. lhe bulb is attached directly to the bellows with the bulb ez ztcndin through he frame into engagement with the cod 'l'old o l? the bellows whereby the latter linedly bold in openatire re ation with the bulb.

l l hile one tor-1n ol? the inventive idea has been r. ribcd with considerable particularity, it to be czzprer-ssly understood that the invention is not limited thereto since changes may he made in the details of construction without depu ti jl roni the invention dctined in the billowing claims.

ll lmt is claimed is 1. ll regulator comprising, in rombination, a frame, a thcrmmiensiti re bulb and an expansible and collapsible be lou's secured llll llli

to said frame, a guide tube and guide rod associated with the ends of saidbellows, said rod having a passage whereby a volatile fluid may be introduced into said bulb and bellows, and means actuated by the expansion and contraction of said bellows.

2. A regulator comprising, in combination,

a frame having an opening therethrough, a.

thermosensitive bulb extending through the opening, said bulb having a bead and groove connection with the frame intermediate the ends of the latter, an expansible and collapsible bellows having an end fold thereof attached directly to the bulb, and means including a rocking member actuated by said bellows.

3. A regulator comprising, in combination, a frame having an opening therethrough, a bulb having a flanged end extending through the opening, the flanged end having engagement with the frame, an expansible and collapsible vessel having the end wall thereof attached directly to the bulb, and means in cluding a rocking member actuated by said vessel.

4. A regulator comprising, in combination, a frame, a bulb and a bellows secured to the frame, a guide tube having openings therein mounted in the bulb and bellows, a guide rod secured to the bellows and extending into said tube, said rod having an opening therethrough for introducing a volatile fluid into the bulb and bellows, a plunger secured to the bellows and constituting a cap for said opening, and means including a rocker actuated by said plunger.

A regulator comprising, in combination, a frame, a thermosensitive bulb and an expansible and collapsible bellows secured to said frame, a filling opening in one end of said bellows, a plunger secured to said end of the bellows and constituting a cap for said opening, and means actuated by said plunger.

6. A device of the class described comprising, in combination, a frame having an opening therethrough, a bulb extending through said opening and supported by the frame, a tube extending into the bulb, a supporting member secured to the tube and having engagement with the bulb, a bellows secured at one end thereof to the said sup porting member and bulb, a head secured to the other end of the bellows, a guide rod secured to said head and extending within said tube, and means having operative engagement with said head and motion trans mitting means.

7. A device of the class described comprising, in combination, a frame having an opening therethrough, a tubular bulb having a bead. extending into a groove in said frame and supported by the latter, a tube extending into said bulb, said tube having a plurality of openings in the wall thereof, a

supporting member secured to the tube and having engagement with the bulb, a bellows secured to said supporting member and bulb at one end thereof, a rigid head for said bellows having a threaded opening therein, a guide rod threaded into said opening and extending in said tube, a plunger threaded onto the head and constituting a closure for the opening in the iead, and motion transmitting means including a rocker having engagement with said plunger.

8. A device of the class described comprising, in combination, a frame having a flanged portion intermediate the ends thereof and having an opening extending therethrough, a bulb extending through the opening and secured to the frame, a bellows secured to said bulb, a head for the bellows, motion transmitting means secured to said head, a housing for the bellows having the inner edge thereof positioned in a groove formed in the outer surface of the flanged portion of the frame, a cap resting on the outer end of said housing, retaining means extending through said cap and flanged portion within the housing for fixedly securing the latter in position, and means including a lever pivotally secured to the cap.

9. A damper regulator of the type where in a frame supports a rocking member that is actuated by an eXpansible and collapsible bellows associated with a thermosensitive bulb and guide tube is secured within the bellows characterized by the fact that the bulb is provided with a flange which is directly connected to an end fold of the bellows and said guide tube acts as a stop to limit the contraction of the bellows.

10. A damper regulator of the type wherein a frame supports a rocking member that is actuated by an expansible and collapsible vessel associated with a thermosensitive bulb, characterized by the fact that the frame is provided with a groove to receive a beaded portion of said bulb, and the bulb is provided with a flanged portion directly connected to an end fold of said bellows.

11. A damper regulator of the type wherein a frame supports a rocking member that is actuated by an expansible and collapsible bellows secured to a thermosensitive bulb and a rod is secured to the bellows for guiding the to and fro movements of the same, characterized by the fact that the rod is provided with a filling opening for introducing a volatile fluid into the bellows and bulb.

12. A damper regulator of the type wherein a frame supports a thermosensitive bulb that communicates with a collapsible bellows which is provided with a plunger for actuating rocking means and a rod is employed for guiding the to and fro movements of the bellows, characterized by the fact that the rod is provided with an opening for introducing a volatile fluid into the bulb and the plunger constitules a cap for said opening.

13. A regulator comprising, in combination, a frame having means of connection to a container, a bulb secured in an opening in said frame, a bellows directly connected to said bulb, an :ipeitureil guide tube in mid bulb and bellows, said bellows being L t'iiill lbl lil lillecl "with :i volatile liquid enbi. sziiii bulb containing saiil liquid until its izipoif iiliijiiillll Iifli therein, Pi guide i'oii C(JlCiQiHpl niii'h Willi tube, and motion irninsmi'tiing lnemie uci'nuiml by said bellows and mounted on said l'i'mne.

In testimony whereof ll have signed ibis specification. 

